//
//  UIColor+Extensions.swift
//  JT-Architecture
//
//  Created by 果咱 on 2020/12/15.
//

import Foundation
import UIKit

extension UIColor {
    
    convenience init(r: CGFloat, g: CGFloat, b: CGFloat) {
        self.init(red: r / 255.0, green: g / 255.0, blue: b / 255.0, alpha: 1.0)
    }
    
    convenience init(hexString: String, alpha: CGFloat = 1) {
        let hexString = hexString.trimmingCharacters(in: .whitespacesAndNewlines)
        let scanner = Scanner(string: hexString)
         
        if hexString.hasPrefix("#") {
            scanner.scanLocation = 1
        }
         
        var color: UInt32 = 0
        scanner.scanHexInt32(&color)
         
        let mask = 0x000000FF
        let r = Int(color >> 16) & mask
        let g = Int(color >> 8) & mask
        let b = Int(color) & mask
         
        let red   = CGFloat(r) / 255.0
        let green = CGFloat(g) / 255.0
        let blue  = CGFloat(b) / 255.0
         
        self.init(red: red, green: green, blue: blue, alpha: alpha)
    }
}
